Electric pocket-lamp



C. BOLTSHAUSER.

ELECTRIC POCKET LAMP.

APPLICATION FILED nac. 24, 1917.

Patented July 13, 1920.

UNITED sTATEsPATENT OFFICE.

, i CONRAD BOLTSI-IAUSER, OF ZURICH, SETITZERLAND, ASSIGNOR TO COMP.PHOEBUS E. Gr., 0F ZURICH, ISUITZERLND.

ELECTRIC POCKET-LAMP.

Specicaton of Letters Patent.

Patented July 13, 1920.

Application filed December 24, 1917. Serial No. 208,693.

To all whom it may concern.'

Be it known that I, CONRAD B on'rs- Hnusnn, a citizen of Switzerland,residing at Zurich, Canton Zurich, Switzerland, have invented new anduseful Improve# ments in Electric Pocket-Lamps, of whichthe following isa specification.

This invention relates to an electric poclretlamp having an oblongcasing made in two sections and containing a battery of looselysuperposed piles, said batteryI being supported with one of itspole-faces on contact members seated on an insulating plate, while itsother pole-face is under the influence of a spring fixed to the uppersection of the casing whose longish form has a tapering end portion inwhich latter a countersunk bulb and the switch members are located.

The improved pocketlamp is illustrated in the annexed drawing in whichFigure l is a face view of the pocketlamp; Fig. 2, a section on line 2-2of Fig. l; Fig. 3, an internal face view of the lower section of thecasing; and Figs. l and 5, are enlarged sections on lines we and 5 5respectively of Fig. 3; Fig. 6 is an enlarged longitudinal section online G-l-I of Fig. 3.

en oblong metallic casing in two sections l, l1 has a forward wedgeshaped head portion. The wedge shaped head of section l forms aninwardly sunk lamp holder serving also as reflector for countersunkbulb. Inside section l there is fixed a blade spring 6. Lowermost insidesection l1 there is secured an insulating plate il which consists of twolayers secured together and having interlaced in its upper layer aContact blade 3, see Fig. 6. A projecting end of the blade 3 extendsover an end portion of a contact plate 5 fast on an insulating pad l1 inthe head portion of section l1.

Part of the contact 5 is slightly bent upward so as to be in permanentcontact with the inner pole of a bulb seated in the aforesaid holder. Asliding switch arm 7 is guided in slots made in the bottom wall ofsection l1. The switch 7 is fitted with a button 8 passing through saidslots into the interior of section l1 and so situated as to enable saidbutton to be switched so as to come under the loose end of the contactblade 3 and lift same off the contact 5.

In the casing is placed a battery 2 which has two conducting faces ofopposite battery poles.

The spring 6 presses on the negative pole face of the battery and thuspresses the lower positive face of the battery on to the con- 6 tactblade 3. l/Vith closed circuit the contact blades 3 and 5 touch eachother so that the electric current passes from the positive pole of thebattery through the said contact blades to the inner pole of the bulb 6and then from the outer pole of the bulb through the metalliclampholder, the metal casing and the blade spring 6 to the negative poleof the battery.

The two insulating plates or pads 4 and 7 41 may form a single piece.

The wedge shaped head of the casing insures reduced bulk and a freelyaccessible placement for the contact and switch members. f

An electric pocketlamp comprising in combination an oblong metallicsectional casing with wedge shaped head portion, a blade spring fast inthe upper section there 8 of, a conntersunk bulb and an inwardly sunkreflecting lampholder in the wedgeshaped head of the upper section, adouble layer insulating pad in the lower section, a contact springinterlaced in said pad, 8 a battery having opposite conducting facespressed against the upper and lower spring respectively, a switch memberin the wedge shaped head of the lower section, and a contact plate inpermanent electric con- 9 nection with the bulb and in interruptedconnection with the lower contact spring.

CONRAD BOLTSI-IAUSER.

